n. 水平, 水准, 平地
a. 同高的, 平坦的, 齐平的, 水平的
vt. 弄平, 夷平, 使同等, 瞄准, 对准
vi. 变平, 拉平
[计] 级别
英文释义
n. height above ground
n. indicator that establishes the horizontal when a bubble is centered in a tube of liquid
n. an abstract place usually conceived as having depth
v. aim at